where does the aem wideband sensor get bunged to?, before the cat or after the cat???, will it affect the afr if its after the cat?? and what if there is no space btw the flex and catt , is it safe to do it after after the catt?

 

read
https://www.cobaltss.net/forums/announcement.php?f=68
moved

 

It has to be before the cat to get correct AFR readings. There should be enough room to get it welded in. Only need about 2 inches or less. Make sure you get it mounted between 10-2...10 is prolly the best spot.

 

i want to put wideband sensor on my oem downpipe.. so the location is 10" of the exhaust manifold flange, before the cat??

 

I think he means somewhere between the 10 o'clock and 2 o'clock position on the downpipes before the 1st cat.